Question

Choose the correct characteristics of cardiac muscles.

a) Involuntary
b) Multiple nuclei
c) Striated
d) Branched

Answer 1

Cardiac muscles are striated, involuntary, and branched.

Step-by-step explanation:

The correct characteristics of cardiac muscles are:

1. Striated: Cardiac muscle, like skeletal muscles, has cross striations, making it appear striped under a microscope.
2. Involuntary: Cardiac muscle is not under voluntary control, meaning it contracts and relaxes without conscious effort.
3. Branched: Cardiac muscle cells are connected at branching angles, forming irregular connections called intercalated discs, which help in passing electrical impulses and maintaining strong connections between neighboring cells.